ABSTRACT
Gasification and Combustion, 3-dimensional PISO Numerical solution method for semi-implicit partial differential equations RNG Re-normalized group RSM Reynolds Stress Model RTE Radiative Transport Equation SC Species concentration
SIMPLE, SIMPLEC, SIMPLER Semi-implicit numerical solution methods for CFD codes SSF Stochastic separated flow STP Stochastic transport of particles TG-FTIR Thermogravimetric-Fourier transform infrared WSGGM Weighted sum of grey gases method
4.1 INTRODUCTION
Fossil fuels are the major source of energy in the world and will continue to be so for the foreseeable future.1,2 Major efforts are therefore being invested in making the use of these fuels more efficient and environmentally acceptable. A significant portion of these efforts for the past quarter century has focused on the development of multi-dimensional, mathematical models of boilers, reactors, gasifiers, and pyrolyzers that can be used to design and analyze fossil-fuel combustion processes. These models serve as tools when characterizing reactive flow processes that complement and, in some cases, replace physical experiments with equivalent "numerical" experiments.
